[sdiy] Which programable chip?

Ian Smith taciturn_unquiet at hotmail.com
Wed Apr 15 17:02:40 CEST 2009


Hey all,
While in the lull of waiting for things to arrive so I can test a design, I came up with an idea that will probably have to be implemented with some sort of programable chip because a CMOS chip count of 32+ is a bit hideous. 
Here's the description:Sequential patch matrix...8 inputs8 outputsLEDs to indicate which input is currently linked to which outputone sequencer to cycle through the inputs one sequencer to cycle through the out putseither can count up or downboth sequencers have a separate internal clock and external clock inbeen thinking about a random mode, because who doesn't like randomness?
It's a simple module, really, but to do it fully in analog would render a nasty part count and large boards. So, what sort of chip should I use? PIC, CPLD, PLD, FPGA? I 'd rather just program in the switches and Multiplexers and leave the clocking to analog circuitry.
-Ian Smith
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